A wireless terminal performance testing method and device

Abstract

The invention provides a wireless terminal performance testing method and device. The method realizes performance testing of LTE‑V2X terminals in an anechoic chamber environment. First, build a test system including an anechoic chamber, a first test device, a transmitter, a channel simulator, an adjustable attenuator, a receiver, and a second test device that are sequentially connected in the anechoic chamber along the direction of signal transmission. During the test, the signal propagation path loss value in this scenario is determined according to the channel model corresponding to different scenarios. When the signal propagation path loss value that the channel simulator can simulate cannot reach the signal propagation path loss value required by the scenario, pass The sum of the signal propagation path loss value of the channel simulator and the attenuation value of the adjustable attenuator is used to simulate the actual signal propagation path loss value in this scenario, which increases the range of simulated path loss and solves the problem of channel simulation in the performance test in the laboratory. The problem that the device cannot simulate the signal propagation path loss in all scenarios.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a wireless terminal performance testing method and device. Background technique [0002] At the beginning of the 21st century, automobile technology and radio technology showed a trend of mutual integration. The proposal of ITS (Intelligent Transportation System, Intelligent Transportation System) realized the information interaction and fusion between vehicles, pedestrians and roadside infrastructure. With the popularity of LTE (Long Term Evolution, long-term evolution) technology, especially LTE-D2D (Long-Term Evolution Device-to-Device, a communication service that supports communication between devices and devices in LTE cellular systems) The formulation of the standard makes it possible to realize direct communication between vehicles, vehicles, and vehicles based on LTE technology, thereby meeting the low-latency, high-reliability communication requirements b...

AI Technical Summary

Problems solved by technology

Due to the large number of scenarios and complex combinations, it takes a lot of manpower and test time to realize all field performance tests, and in some scenarios, there are safety hazards when the vehicle terminal moves at high speed

At the same time, considering that in the actual field test scenario, there may be interference signals that interfere with the performance of the receiver, affecting the effectiveness and accuracy of the performance test

In addition, because the channel simulator limits the scope of its simulated signal propagation path loss, the existing general laboratory performance test methods for mobile communication terminals cannot simulate the channel environment when the signal propagation path loss value is large, and cannot realize the actual communication channel The environment is fully simulated

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